myhdl-list

[myhdl-list] Ram initialisation

[Nicolas P. <ni...@aa...>]

Hi,

I am trying to generate a RAM with initial values.

Here is the code :
def MemoryGene1000Hz(
...
                     ):

     data_length = len(dia)

     # Instanciate RAM array
     ram = [Signal(intbv(0)[data_length:]) for i in range(2**len(addra))]

     # Init RAM with full scale sinus (48 samples)
     scale_factor = (2**(data_length-1)) - 1
     for i in range(48) :
         v = int(sin(i*2*pi/48) * scale_factor)
         ram[i] = Signal(intbv(v)[data_length:])
         #print(i, "%6.6X" % ram[i])

     ...

VHDL code generated is as follows :
type t_array_ram is array(0 to 256-1) of unsigned(23 downto 0);
signal ram: t_array_ram;

The ram array is not initialised.

Bug or bad code ?

Nicolas

-- 
*Nicolas PINAULT
R&D electronics engineer
*** ni...@aa... <mailto:ni...@aa...>

*AATON-Digital*
38000 Grenoble - France
Tel +33 4 7642 9550

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Re: [myhdl-list] Ram initialisation

[Christopher F. <chr...@gm...>]

On 1/8/16 9:08 AM, Nicolas Pinault wrote:
> Hi,
>
> I am trying to generate a RAM with initial values.
>
<snip>
>
> The ram array is not initialised.
>
> Bug or bad code ?
>

Neither, the feature has not been completed and enabled
yet https://github.com/jandecaluwe/myhdl/issues/105

Regards
Chris

Re: [myhdl-list] Ram initialisation

[Nicolas P. <ni...@aa...>]

Le 08/01/2016 19:09, Christopher Felton a écrit :
> On 1/8/16 9:08 AM, Nicolas Pinault wrote:
>> Hi,
>>
>> I am trying to generate a RAM with initial values.
>>
> <snip>
>> The ram array is not initialised.
>>
>> Bug or bad code ?
>>
> Neither, the feature has not been completed and enabled
> yet https://github.com/jandecaluwe/myhdl/issues/105
Ok. Great !
Any idea for release time ?

Nicolas
>
> Regards
> Chris
>
>
>
> ------------------------------------------------------------------------------
> _______________________________________________
> myhdl-list mailing list
> myh...@li...
> https://lists.sourceforge.net/lists/listinfo/myhdl-list
> .
>


-- 
*Nicolas PINAULT
R&D electronics engineer
*** ni...@aa... <mailto:ni...@aa...>

*AATON-Digital*
38000 Grenoble - France
Tel +33 4 7642 9550

http://www.aaton.com
http://www.transvideo.eu
French Technologies for Film and Digital Cinematography

Follow us on Twitter
@Aaton_Digital
@Transvideo_HD

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Re: [myhdl-list] Ram initialisation

[Christopher F. <chr...@gm...>]

On 1/11/2016 1:24 AM, Nicolas Pinault wrote:
> Le 08/01/2016 19:09, Christopher Felton a écrit :
>> On 1/8/16 9:08 AM, Nicolas Pinault wrote:
>>> Hi,
>>>
>>> I am trying to generate a RAM with initial values.
>>>
>> <snip>
>>> The ram array is not initialised.
>>>
>>> Bug or bad code ?
>>>
>> Neither, the feature has not been completed and enabled
>> yet https://github.com/jandecaluwe/myhdl/issues/105
> Ok. Great !
> Any idea for release time ?

More complicated question than most would like :)
All devs are volunteers and most have other commitments.
Bugs are typically addressed timely enhancements depend
on availability.  Based on past releases, the next release
1.0 will be awhile.  But with that said, the trunk is
very stable, many use the latest master branch.

Regards,
Chris

Re: [myhdl-list] Ram initialisation

[Nicolas P. <ni...@aa...>]

Le 12/01/2016 15:36, Christopher Felton a écrit :
> On 1/11/2016 1:24 AM, Nicolas Pinault wrote:
>> Le 08/01/2016 19:09, Christopher Felton a écrit :
>>> On 1/8/16 9:08 AM, Nicolas Pinault wrote:
>>>> Hi,
>>>>
>>>> I am trying to generate a RAM with initial values.
>>>>
>>> <snip>
>>>> The ram array is not initialised.
>>>>
>>>> Bug or bad code ?
>>>>
>>> Neither, the feature has not been completed and enabled
>>> yet https://github.com/jandecaluwe/myhdl/issues/105
>> Ok. Great !
>> Any idea for release time ?
> More complicated question than most would like :)
> All devs are volunteers and most have other commitments.
> Bugs are typically addressed timely enhancements depend
> on availability.  Based on past releases, the next release
> 1.0 will be awhile.  But with that said, the trunk is
> very stable, many use the latest master branch.
In fact, I was talking about patch release time, not release time for 
version 1.0.
I already use trunk version.
Anyway, thanks for clarifying.

Regards,
Nicolas

> Regards,
> Chris
>
>
>
> ------------------------------------------------------------------------------
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-- 
*Nicolas PINAULT
R&D electronics engineer
*** ni...@aa... <mailto:ni...@aa...>

*AATON-Digital*
38000 Grenoble - France
Tel +33 4 7642 9550

http://www.aaton.com
http://www.transvideo.eu
French Technologies for Film and Digital Cinematography

Follow us on Twitter
@Aaton_Digital
@Transvideo_HD

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